Insulator



of Chica Pumas Dec. i1, niza.

UNITED STATES 1,477,406 PATENT OFFICE.

i IDWABD H. 0l' CBICAGQ, ILLIIQII.

mULATOB.

Application lied December 18, 1981. Serial lo. lilll.

To all 'whom it may concern:

Be it known that I Enwm H. Wiliam, a citizen of the United States, and a resident ,in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Insulators, of which the following, reference being had to the drawing accompanying and forming a part hereof, is a specification.

This invention relates to insulators for supporting safety rails in trackside installations of automatic train signal systems, and for supporting wires and other electric conductors.

Among the objects of the invention are to obtain an insulator which will arrest to a large extent, current leakage; an insulator adapted to support conductors having high potential currents; to obtain an insulator provided with a lightnin arrester, by means of which telegraph, te ephone, and other lines willbe protected from injury by lightning, and to obtain an insulator which will not be affected by moisture, rain, or water precipitation from any source. Additional objects are to obtain an insulator which is economicallymade, durable, and not liable to get out of order, and to which brokenl or otherwise injured parts-can be replacedupon the removal of similar parts.l

In' the drawing referred to Fig. l is a top plan view Vof a construction embodying thel invention. l

F i 2 is a vertical section, on line 2-2 of Fig. 1, viewed as indicated by arrows; and v Fig. 3 is a side elevation, on a smaller scale than Figs. 1 and 2, with one of the elements of the device in a different osition.

A reference character applied to esignate a given part indicates said part throughout the several figures of the drawing, whereever the same appears.

A represents the base of the insulator, and a, a, a, screws by means of which said base may be secured to a table or stand. B represents a screw threaded standard on base A, which is preferably integral with said base, and is so illustrated. C represents an internall screw threaded sleeve which is adjustab mounted on standard B, by means o the corresponding screw threads illustrated. D represents an additional sleeve of insulating material, as glass, porcelain or other material, in which the sleeve C is secured, and d represents an annular groove at the up r end of sleeve l). represents oil or ITher nonconducting liquid in groove d. F represents a sc rew threaded sleeve which is provided with annular Ilan f, which is also secured 1n sleeve D, in t u per end thereof. G represents a stands which is provided with the annular 'flange g, and with screw threads below said ange corres nding with the screw threads in sleeve The upwr end of the sleeve C and the lower en of sleeve F are rovided with the inner annular flanges H; and I, I' represent lightnin arrester members which are provided wit annular dan J, J; said members being rigidly secu in determined relation by members K, K. Said members I, I are preferably made of carbon, and the sleeves C, F, in which the are secured are of determined length so that when assembled in sleeve D the desired p between said members I, I is obtained, so that incase a current of high otential is conveyed to standard G, as a bo t of lightning, it may bridge said gap. L represents a water guard or shield, which is rigidly secured on standard G, between the insulating disks l, l. YTo. secure ard L in place ythe standard G Ais screw into sleeve F until theannular fia-nge y is close tocontact with the. disk l', thereby forcing disk? down onto fla-nge f of sleeve I". M represents a safety, or ramp rail, which is illustrated as rigidly secured to member- N, by means of screws m, m; andmember'N is illustratedv as rigidly secured to standard G b screws n, n. f

-Tg clean andreplenish the groovel d in ,sleeve D, said sleeve is turned on standard4v B, substantially into the position illustrated in Fig. 3, in which position acces can be easily had to said groove and its contents.

O represents a conductor from base A to ground P.

In case of any injury to parts A, B, C, lD, F, G, I, I', or any of them, the base A may be removed from the table or stand on which it is mounted, by removing screws a, a, a; and thereafter the standard B turned out of the sleeve C; after which the sleeve D ma be turned and separated from standard. ereafter, if necessary the members K, K and members I, I', or either of them, may be removed and new members substituted therefor. After the injured parts have been replaced by corresponding lll new parte the several parts are reassembled., and the hase .d again secured in place by screws a, a, a.

When the insulator is assembled as descrihed and illustrated, in case any moisture collects under the guard L and falls upon the insulating sleeve D, the portion thereol which falls upon the oil E in groove al, will tall beloviT the surface or said oil, and said oil, together With thel upper end oi' sleeve D will retain the insulation of lthe insulator, and prevent leakage ol current therethrough.

ln ease of a current of high potential, as a bolt of lightning iis-conducted to standard G, it will bridge the gap between members l, I and lovv through conductor O to ground P, Without injury to the insulator.

ln case the groove g contains no oil and moisture precipitates therein, the sides ol said groove rapidly become dehydrated, and thereafter no leakage ol current will occur over the upper end of sleeve G.

l claim:

l. ln an insulator, a base provided with a screw threaded standard, a sleeve of insulating material mounted on said standard, said Larmes sleeve provided with an annular groove at the upper end thereof adapted to receive and retain oil, a standard mounted in sai last named sleeve, and a guard ri idly mounted on said last standard between islrs of insulating material, all combined as set forth.

2. ln an insulator, a base, a standard on said base, and a sleeve mounted on said standard, in combination with an additional sleeve or insulating material provided with an annular groove on the upper end thereof adapted to receive and retain oil, and rigidly mounted on said first sleeve, a sleeve rigidlysecured in the upper end of said additional sleeve, lightning arrester members secured in spaced relation in said first and last namedsleeves, an additional standard secured in said last named sleeve and a Water guard secured on said last standard and Aseparated therefrom by disks of insulating material. l.

EDWARD H. WERNER.

Witnesses:

Cuantas Tunnnn BROWN, Bess S. BROWN.. 

